Leeks (Allium ampeloprasum var. porrum) are a type of vegetable belonging to the onion family, which also includes garlic, onions, and shallots.
Leeks have a long, white cylindrical bulb that transitions into flat, dark green leaves. The edible part is primarily the white and light green sections. They have a mild, sweet onion-like flavor, which is less pungent compared to onions, and are rich in vitamins A, C, and K.